Page 1
RK100 Pre-amp
68k
220k
.0022
470k
500k log
Tandem
1k5
2.2uF
1 meg
.033
2N5462
100 pF
2.2uF
1k5
100k
.022
470 pF
470k
15k
100k
.033
1M
470k
470k
470 pF
1k5
220k
100k
.033
250k lin
1M log
25k lin
330 pF
43k
0.1
To Effects
Send Socket
10k
470k
220pF
Low Voltage
Supply
G
F
E
Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
100k
2k7
33k
500k log
Tandem
100k
Input
Front Panel
Footswitch
RK100 Schematic
Design By: Martin Kidd
Drawn By: Martin Kidd
07/06/2011
Page 2
1 meg
22k ¾-Watt
RK100 Effects
Loop
1k5
220k
47uF
450V
.033
Master Volume
H.T. D
1 meg
log
Effects Send Effects Return
Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
To Phase Splitter
RK100 Schematic
Design By: Martin Kidd
Drawn By: Martin Kidd
07/06/2011
Page 3
91k 100k
1 meg
1 meg
470 R
10k
4k7
0.1
25k lin
0.1
.0047
47k
.022
.033
.033
100 pF
H.T. C
From
Master
Volumes
RK100 Phase Splitter and
Output Stage
D
Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
100K
Bias
Supply
B+
1k
4W
1k
4W
220
k
10k
10k
EL34
or 6L6
EL34 or
6L6
10k
16 ohm
8 ohm
4 ohm
common
EL34
or 6L6
EL34
or 6L6
10k
To Valve
Failure Fuse
Holders
RK100 Schematic
Design By: Martin Kidd
Drawn By: Martin Kidd
07/06/2011
O/P Valves 1 & 4
O/P Valves 2 & 3
Page 4
6.3V ac to all heaters
Bias winding 50V ac
12V ac
High Tension
Winding 320V ac
4 x 1N4007
B
+
C D E F G
1N4007
1N4007
1N4007
100R 7W 10k 3W 10k 3W 10k 3W 10k 3/4W
10k
22k preset
220k
100 uF 63V
2200 uF 25V
Bias Supply
Low Voltage
Supply
50 + 50 uF
500V
50 + 50 uF
500V
3 x 47 uF 450V
Standby
Switch
Mains
Switch
L
E
N
Mains Inlet
Mains fuse: 220 - 240 Volt operation T3.15A
100 - 120 Volt operation T6.3A
Mains
Fuse
RK100 Power Supply
Note: All capacitors 400V unless otherwise stated. All resistors ½ W unless
otherwise stated
220k
EL34/6L6
Bias Switch
Brown
Blue
Yellow
Orange
115V
100V
230V
RK100 Schematic
Design By: Martin Kidd
Drawn By: Martin Kidd
07/06/2011
Page 5
150K 2W 150K 2W
Low Current
LED
Low Current
LED
1R 1W 1R 1W
Fuse: T500
mA
Fuse: T500
mA
From O/P Valve 1 & 4
Cathodes
From O/P Valve 2 & 3
Cathodes
RK100 Valve failure Fuses
RK100 Schematic
Design By: Martin Kidd
Drawn By: Martin Kidd
07/06/2011
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